Moisture uptake and loss of GCLs subjected to thermal cycles from silty sand subgrade-Reference-Cited by-同舟云学术

Moisture uptake and loss of GCLs subjected to thermal cycles from silty sand subgrade

Published:2023-04 Issue:2 Volume:30 Page:113-128
ISSN:1072-6349
Container-title:Geosynthetics International
language:en
Short-container-title:Geosynthetics International

Author:

Rowe R.K.¹,Garcia J. D.D.²,Brachman R.W.I.³,Hosney M.S.⁴

Affiliation:

1. Barrington Batchelor Distinguished University Professor and Canada Research Chair in Geotechnical and Geoenvironmental Engineering, GeoEngineering Centre at Queen's-RMC, Queen's University, Kingston ON, Canada,(corresponding author)

2. Former MASc Candidate, GeoEngineering Centre at Queen's-RMC, Queen's University, Kingston ON, Canada,

3. Professor of Geotechnical and Geoenvironmental Engineering, GeoEngineering Centre at Queen's-RMC, Queen's University, Kingston ON, Canada,

4. Post-Doctoral Fellow, GeoEngineering Centre at Queen's-RMC, Queen's University, Kingston, Ontario, Canada; Assistant Professor, Faculty of Engineering, Cairo University, Cairo, Egypt (on leave),

Abstract

The effect on GCL hydration and dehydration, when subject to thermal cycles, of (1) GCL bentonite granularity (powdered vs. granular), (2) GCL geotextile type (scrim-reinforced nonwoven vs. woven), (3) subgrade macrostructure due to fines aggregation, and (4) subgrade density and fines content is examined. Results of 17 hydration tests were assessed for two virgin and deconstructed GCLs placed on a nominally silty sand subgrade at wfdn = 16% during daily thermal cycles when the airspace was heated to 60°C and cooled to 30°C. It is shown that bentonite granularity and mineralogy, the type of carrier geotextile and the subgrade conditions all significantly impact the GCL on cyclic hydration and that the moisture retention of a GCL is dependent on both the type of GCL and the properties of the underlying subgrade.

Publisher

Thomas Telford Ltd.

Subject

Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/jgein.21.00049

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